This catapult will throw a ping pong ball 20 feet or more!!! Lots of space to paint a fun design on the 6 inch x 6 1/2 inch sides. Easy to build with nails. Great fun. Fits many day camp themes. Wooden parts have pilot holes for nails. This is our most popular kit. Works well for a knights / castle theme for day camps or just general fun. Wolf Achievement 5d; Bear Achievement 21a; Webelo Engineering #8. WARNING: Choking Hazard Small Parts and Sharp Points.